| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | config GFS2_FS |
| 2 | tristate "GFS2 file system support" |
| 3 | depends on (64BIT || LBDAF) |
| 4 | select FS_POSIX_ACL |
| 5 | select CRC32 |
| 6 | select QUOTACTL |
| 7 | help |
| 8 | A cluster filesystem. |
| 9 | |
| 10 | Allows a cluster of computers to simultaneously use a block device |
| 11 | that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads |
| 12 | and writes to the block device like a local filesystem, but also uses |
| 13 | a lock module to allow the computers coordinate their I/O so |
| 14 | filesystem consistency is maintained. One of the nifty features of |
| 15 | GFS is perfect consistency -- changes made to the filesystem on one |
| 16 | machine show up immediately on all other machines in the cluster. |
| 17 | |
| 18 | To use the GFS2 filesystem in a cluster, you will need to enable |
| 19 | the locking module below. Documentation and utilities for GFS2 can |
| 20 | be found here: http://sources.redhat.com/cluster |
| 21 | |
| 22 | The "nolock" lock module is now built in to GFS2 by default. If |
| 23 | you want to use the DLM, be sure to enable HOTPLUG and IPv4/6 |
| 24 | networking. |
| 25 | |
| 26 | config GFS2_FS_LOCKING_DLM |
| 27 | bool "GFS2 DLM locking" |
| 28 | depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \ |
| 29 | HOTPLUG && DLM && CONFIGFS_FS && SYSFS |
| 30 | help |
| 31 | Multiple node locking module for GFS2 |
| 32 | |
| 33 | Most users of GFS2 will require this. It provides the locking |
| 34 | interface between GFS2 and the DLM, which is required to use GFS2 |
| 35 | in a cluster environment. |